Chipper 18HP DR Chipper

   / 18HP DR Chipper #21  
Source of Mk62? No relation to anything that I'm aware of. When faced with coming up with a user name at registration I thought, well my name is Mark and I was born in 1962, so.... Kind of silly I suppose but since Mark is so common and already taken I went with Mk62. You'll notice I actually sign my posts with Mark.

Thanks for your detailed inputs. Regarding propane preheat for moist wood chips...is the preheater an off the shelf item or custom build. If off the shelf, anyone have a website source?
 
   / 18HP DR Chipper #22  
I didn't mean propane pre-heat; he installed a completely independent propane boiler...

-david
 
   / 18HP DR Chipper
  • Thread Starter
#23  
Mark, Oh well, our brain's pattern matching capability is prodigious, even when there really isn't a pattern. The MK48 is a current inventory, wire guided (for stealth but can run active or passive when cut lose), nuclear warhead capable torpedo.

Anyway, to probably misquote a famous movie line, "what we have here is a failure to communicate" (with appologies to "Cool Hand Luke")

I did not mean to imply that the propane would be a preheat for wood chips (hadn't really thought of that but sounds wasteful). The idea for using propane is that its control is easily automated. Pellet stoves can have electric ignition but the form factor of pellets, compared to chips, makes it easier to ensure close contact with the igniter element. It was an idea that I had that rather than trying to ignite wood chips electrically, I might ignite a propane "pilot flame", if you will, that ignites the chips. Whether or not the pilot would need to stay lit the whole time the thermostat is calling for heat would be determined experimentally. My thinking was that the pilot would help ignite chips that might not be dry enough to easily light otherwise. Once started, especially if I use a blower to boost combustion air, I think the wood chips could be pretty moist and still work, especially, if the design allowed them to be preheated (dried) a bit on the way to the firebox or "in storage" in a large hopper.

I would think that a conventional pellet stove retrofitted with a propane pilot as described above with appropriately sized chips (or a modified auger to accomodate what you produce locally) would probably work pretty good (albeit with greater ash production and need to deal with the increased ash) but as my needs are for efficiently heating water, a "regular" pellet stove converted to chips isn't the solution.

As I don't have time to prototype right now, I'm still just in the cussin' and discussin' phase. I'll have to look into pellet fired boilers (if they exist in a suitable form) and see what might be required for successful modification to run on chips, propane pilot, etc.

Patrick
 
   / 18HP DR Chipper #24  
I hooked up the DR today and tried the trailer out on our dirt road. I would not tow it at thirty-five on a rough road. You are so right about the bounce. I also put it behind My 4300 JD and took it for a tour of the property. I pulled it though the stream and up some step hills too. The only problem was caused by my long draw bar and the trailer tongue. Going though a ditch I got hung up. Just went through at an angle and all was well.

My land is all hills and ravines and the DR went everywhere the tractor could pull it. I will not use mine on the road but if I were, some serious suspension work would have to be done.

On the rental question, whenever I rent a machine I always plan to get my moneys worth. The flip side of that is that I usually over work this old body of mine and pay the price in pain. I like the idea of being able to just hook on and go chipping for an hour or so. I have 23 acres of woods that need constant work. The big machines are fast and good but I use all the wood over and inch or so thick for firewood. The DR 18hp is the perfect solution for my needs.

I have to really think about watching the discharge chute. I am better at it now and have not had a jam since the first day.
 
   / 18HP DR Chipper #25  
Patrick,

It seems like your 30 day trial period should be about over. What do you think of the DR chipper after grinding juniper for a month?
 
   / 18HP DR Chipper #26  
I went with the 10hp unit. Used it this past weekend for the first time. Put in at least 10 hrs with it. Very happy!! It chips the 3 inch limbs without a problem. As mentioned in the previous posts....watch the output chute...as long as you see the chips coming out all is ok. I clogged it pretty good one time when I first started.....I simply had to take the side cover off and turn the flywheel manually after clearing a few pieces from the output chute. 10 minutes later and I was back in business. The limbs that I am chipping are mainly pine, cherry, and crab apple. I have the chipper on my trailer to move it around the property...I put the FEL under the chipper chute. Works great....work a little with the chipper....then play a little to unload the FEL!

The 10hp is definitely worth the money and it works great for what I need.....I was starting to think I maybe should have bought the bigger one....until I started it up and chipped the first few branches....then I knew I had made the right choice!
The fresh cut limbs are definitley easier to chip. The dry ones vibrate quite a bit and will wear you out!
 
   / 18HP DR Chipper
  • Thread Starter
#27  
Bill (Bilge49?), I stopped by the side of the road and had a chat with the foreman of a crew topping trees, cutting trees and brush, and generaly clearing the right of way near the roadside power line. They use fairly large professional equipment and fill a fair sized truck with their effluent chips. They were happy to bring a load a mile to my mom's house and drive 600 ft down driveway to dump the load. It made about 10-12 FEL buckets for my 46 HP Kubota. Made a lot of progress faster than I could with the 18 HP chipper.

BUT... I love the chipper so far and I don't know why my trees and limbs would be tougher than the next guy but when I feed stuff about as big as will fit through the chute it sure bogs the engine down and the chip size goes up significantly (still acceptable though). I tend to not let the largest stuff go through as fast as smaller stuff. I hold onto the limb so as the engine starts to load up I hold the limb off a tad and as the RPM begins to build I feed more. Works fine and makes me happier, whether or not it is neccessary. Of course yo feed the big end first so after a bit they usually have tapered down in size a bit and faster feed is OK. I don't recall all the specs and literature but I think the 10 and 12 HP units have only one blade so take one bite per rev while the 18 HP unit has two knives. If I recalled correctly that might explain thte bogging a bit, it would be doing twice the work per rev of the flywheel (don't know if they are "geared" belted the same.

It is a keeper. It isn't a high volume industrial tree eater for a crew to clear a right of way with but once I get more caught up with back log (unconscious pun) I will have all the machine I need and a litle more. Just the other day, between rains, a neighbor brougt a trailer load of limbs to me that due to weather delays had stayed on his lawn tooooo long and were killing his grass. It took maybe 15-20 min to process them and distribute the chips. So much for thoughts of renting being a better deal than owning.

Regarding the infamous juniper trees (AKA cedars, erroneously) If the limbs are fresh and they are wet, you have to keep a sharp eye on the output chute as this is one of the three worst clogging opportunities I have discovered to date. I can't say I ever got a clog witout lettting the pile touch or nearly touch the output chute but wet fresh cedar will ceratinly do it given the slightest provocation. Number two is little twigs which tend to form a mat/clog at the exit chute because some twigs will come out fairly long and touch the top of the chip pile while it is say, 6 inches from touching the chute. As soon as the first ones touch the top of the pile, others jam against them and so on and so forth. And #3 is just plain not keeping an eye on the output pile of chips and letting it bury the output chute. Simple solution to all of the above is to give the pile a kick every little while and then there are no clogs, at least I don't think I would have had a clog.

Clogs aren't so hard to clear, just shut down and when things stop turning (not to long with a fairly bad clog) reach up the output chute and wiggle your fingers down its throat till it... well reach up and dislodge the material in the chute and it falls out. I haven't had to dismantle anything to clear a clog yet.

More cedar commentary: I was warned that the cedar/juniper sap would gum up the works. It hasn't yet. I was told to put water down the input hopper while the unit was running to help clean the sap out but haven't tried it yet, not having experienced a problem. I have shoved a lot of cedars down in the last week with the FEL. Raise it aout 6-8 ft in the air and push on the tree. One of three things happens. It breaks off after the front wheels have left the ground and the branches on the other side cushion your fall and it gracefully rides the tree down. It partially uproots the tree, you get the same controlled descent, and you go to work on the root ball with the FEL, or you climb the tree with the tractor, front wheels way up in the air till the pucker factor proibits your continued aggression and you back off and dig at the roots for a while before trying again. I am starting to stockpile a fair number of trees that should make some dandy fence posts when relieved of their branches. I will strip the trunks with the chain saw and chip the limbs (and the nasty "leaves") reserving the trunks for posts. As the trees are 90-95% cedar/junipr that I am attacking, just now, I will get a chance to REALLY test the cedar eating ability but from experience to date do not anticipate a problem. If you let them dry a bit the leaves are less prone to try to clog but I don't think I will need to wait with my new chip a little, kick the pile, chip a little, policy. The larger of the trees I am pushing over are 8-12 inches in diameter and maybe 15-20 ft tall.

I guess I am being chauvinistic as I go out of my way to attack the female trees. My extension agent pointed out that there are male and female of these trees and that the females provide the litttle berries that the birds eat, coat with fertilizer, and distribute all around. There is more bank for your buck to attack the females first and come back to any males later when the rapid spread is controlled.

Regarding soon2b8's post: I don't know where he gets his balsa logs to chip with his 10 HP unit. I do agree with the hard dry limb comment. Much more vibration, way beyond a soothing massage for your hand.

Really old easily broken limbs which have begun to decay are fun... in goes a limb and out comes powder and a few small soft chips, almost composted. I did have a flat on a tire. Slow leak, hard to find but got it patched. Ran over a thorn probably. Likely, locust. DON"T CHIP LOCUST!! What a mine field that would make. I either park the chipper where I want the chips and bring the limbs to it or take the chipper to the limbs and put the FEL bucket under the output chute. A tarp would be a good idea too if you didn't make a pile too big to pick up.

I am making a no/low maint yard for my mom (85). She hoes the garden, plants flowers and so forth but doesn't mow lawns anymore. We are making a 20 ft or so belt around the house out of chips. It is working good so far but we are only 10% done (which is why I went begging for massive quantities of chips). I expect that once done we will do maintenance by adding a few now and then, easily done with this chipper. We have had a few inches of rain since we started the chip-carpet project. You can walk on it right after a rain, no mud, very little sticks to you, weeds are reduced etc. SO FAR SO GOOD!

I'll never run out of uses for chips. Hope this chipper keeps going like it has for a long time, again, so far so good.

Patrick
 
   / 18HP DR Chipper #28  
Patrick,

Sounds like it works on the ashe juniper. That's good, because that's all I'm clearing. I will probably go for the pto version if I buy from Country Home, but I think it's the same unit.

I have been clearing about 7 acres (see <A target="_blank" HREF=http://www.tractorbynet.com/cgi-bin/compact/showflat.pl?Cat=&Board=photos&Number=153831&page=0&view=collapsed&sb=5&o=0&fpart=>chopping cedar</A>) and I am the proud owner of pile after huge pile of mountain cedar./w3tcompact/icons/frown.gif It will all be dry before I get a chance to grind it up or burn it. It's hard to burn up on the ridge, however, so that's why I'm leaning toward the chipper.

That's good information about attacking the females first to stem the reproduction. Of course, if you're allergic to the pollen, the males are the ones you want to get rid of first./w3tcompact/icons/laugh.gif
 
   / 18HP DR Chipper
  • Thread Starter
#29  
Bill, I looked at the photos. Looks dry, real dry. Dry enough to use a swamp cooler to good advantage. Any idea what your insolation is there?

Anyway, dried but not ancient cedar will reduce the clogging potential (when dry, a lot of the leaflets fall off when handling or from vibration when the big end is being eaten). The trunks make decent fence posts if you are inclined toward a more rustic look. More bad news regarding cedars (but perhaps not applicable to your DRY looking area). They spread a disease that destroys apple trees. I asked my info source how far I had to clear the cedars away from our newly planted apple trees in order to get decent protection. The reply, 10 miles. Oh well.

In the short view, males are a problem but in the long view, the males sure as heck aren't producing more male trees.
If the knife totin' flywheel is the same in the PTO version as the 18HP then you would have one tree munchin' monster. Only downside I see to that is that it ties up the tractor, sort of. Kinda hard to put the chips in the FEL bucket while the chipper is on the 3PH. A helper can't be chippin' while the tractor delivers a load. the trailer version is light enough to pick up the tongue by hand and push around in tight spaces. I'm sure there are just lots of little things like that but they might not matter to you and the way you might use your equipment. Did I mention that, PTO driven, it will have a BIG appetite for wood.

Please share your results with us.

Patrick
 
   / 18HP DR Chipper #30  
Patrick,

I had to go look up "insolation" and found <A target="_blank" HREF=http://www.suntrekenergy.com/sunhours.htm>this table</A>. Burnet County is pretty close to San Antonio, and it looks like we get somewhere between OK City and Stillwater. Plenty for some solar power arrays if we build up there. Also considering windpower since we have a steady "breeze"./w3tcompact/icons/laugh.gif.

When we first walked the property, the owner had opened the tap upstream somewhere, so there was water in the creek /w3tcompact/icons/wink.gif (see picture). It sure has been dry up there this year, however. About 10" below average YTD, before the 2" rain this week./w3tcompact/icons/smile.gif
 

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